INTERRELATIONSHIPS BETWEEN YIELD AND SOME OF ITS COMPONENTS UNDER TWO IRRIGATION SYSTEMS IN BARLEY EXPERIMENTS
Abstract: Two field experiments were conducted at a private farm on Alexandria Desert Road, Egypt during the winter seasons of 2011/2012 and 2012/2013 to study the relation between yield and its components in three barley cultivars (Giza 123, Giza 124 and Giza 125) under two irrigated systems (sprinkle and flood) using some multivariate procedures, i.e, simple correlation, stepwise multiple linear regression, factor and path coefficient analysis. Significant and positive correlations existed between grain yield/plant and each of number of spikes/plant, plant height, spike length, number of grains/ spike and weight of 1000 grains. Stepwise analysis accepted number of grains/ spike and weight of 1000 grains with R2 being 91.7% in sprinkle system. While it accepted spike length and number of spikes/plant with R2 being 71.1% in the flood system. Factor analysis indicated three factors with total variance of 95.84%, factor 1 reflected 33.55%, factor 2 explained 33.53% and factor 3 accounted 28.76% of the total variance in the sprinkle irrigation. On the other hand, under flood irrigation, three factors existed with total variance of 94.46%; factor 1 accounted for 42.69%, factor 2 reflected 27.15% and factor 3 explained 24.62% of the total variance. Path analysis in sprinkle system, indicated that the highest positive direct effects were scored by number of spikes/m2 and weight of 1000 grains with relative importance in the total yield variability of 13.62% and 4.86%, respectively. Number of spikes /m2 recorded the highest indirect effects on grain yield /plant via other traits; weight of 1000 grains, spikes length and plant height were positive recorded 13.87%, 12.50% and 10.81%, respectively Results of flood system indicated that the number of grains/spike and spike length exhibited the highest direct effects towards grain yield/plant with relative importance of 7.36 and 4.16%, respectively. While, the indirect effect of spike length on grain yield/plant through number of grains /spike recorded 9.57%, number of spike/m2 via weight of 1000 grains recorded 7.06%.
Publication year 2013
Pages 117-128
Organization Name
Author(s) from ARC
External authors (outside ARC)
    منى سليمان قسم الرى والعلاقات المائية- المركز القومى للبحوث الزراعية.
Publication Type Researsh & Applied Activities
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